Improvement in chairs and step-ladders combined



B. F. GREEN.

Chairs and Step-Ladders Combined, I

No.140,363. Patented July1,1873.

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AM. PHOTO-IIITIOGRAPHIC ca uk(nssomvs PRacEss) UNITED STATES PATENTQFFIGE.

BENJAMIN F. GREEN, OF SYRACUSE, NEW YORK.

IMPROVEMENT IN CHAIRS AND STEP-LADDERS COMBINED.

Specification forming part of Letters Patent No. 140,363, dated July 1,1873 application filed Juno 6, 1873. i

To all whom it may concern:

Be it known that I, BENJAMIN F. GREEN, of the city of Syracuse, in thecounty of Onondaga and State of New York, have invented a new and usefulImprovement on Combined Chair and Step-Ladders; and I do hereby declarethat thefollowin g is afull, clear and exact description of theconstruction and operation of the same, reference being had to theannexed drawing forming a part of this specification, in which- Fig. lis a sectional side view, showing the parts in position for a chair.Fig. 2 is a like view, showing the parts unfolded for a stepladder.Figs. 3 and 4 are detail views.

Similar letters of reference indicate like parts in the several figures.

The object of my invention consists in combining with the two mainsections forming a chair and step-ladder, as shown, a frictionclamp anddowel-pins for securing the parts in the folded position, and alsometallic terminations for the chair-back to obviate liability for thispart to slip on the floor when used as a step-ladder, as hereinaftermore fully explained and when to be used as a step-ladder are unfoldedreadily, without stooping to release the clamp, by placing the foot uponone of the'rounds f and pressing forward on the back of the chair, theclamp yielding to a pressure sufficient to slide the loop of the springup over the apex of the catch. To give the parts additional rigidity inthe closed position with relation to each other the part A is providedwith dowel-pins i, and the opposite part with corresponding sockets, asindicated by j, Fig. 2. As the polished wood of the chair is liable toslip on asmooth hard floor I insert serrated or roughened metallic plugsh h in the terminations of the chair-back, as shown more clearly in Fig.3.

I claim as my invention- The apex spring-clamp (I e, dowels z'j, andserrated plugs h, as-herein shown and described, in combination with thehinged sections A a B b of the chair and ladder, as and for the purposespecified.

BENJAMIN F. GREEN.

\Vitnesses:

LOUIS T. SMITH, J. L. SoHENcK.

